The food industry has a wide range of raw materials and a wide variety of products, and the amount and quality of wastewater discharged vary greatly. There will be more organic matter and suspended solids in wastewater, which is generally non-toxic, but it is easy to deteriorate and decay, according to these characteristics of wastewaterTreatment of food wastewaterThere are several ways to do this:
Physical Law:Sedimentation, filtration, centrifugation, etc., mainly used to remove suspended solids and impurities in sewage.
Chemical Method:Neutralization method, redox method, coagulation method, etc., to remove heavy metal ions, acid and alkali substances and organic matter in sewage.
Biological Law:Activated sludge method, biofilm method, anaerobic biological treatment, etc., to remove organic matter and other nutrients in sewage.
In addition, there is also the sieve method, which mainly removes large particulate matter in sewage through screens with different pore sizes. It can preliminarily filter the residue and peel in the sewage, which is more convenient.
The sieve filter method generally selects screens with different pore sizes, uses stainless steel or nylon materials, and installs them at the entrance of the sewage pool, and should be cleaned, inspected and replaced regularly in the process of use to avoid blockage.
The screen method can only filter large particles of magazines, and the filtered sewage will contain small particles of magazines and organic matter, at this time, a series of methods such as physics, chemistry and biology can be used, of course, these methods can be combined in some cases to achieve the best treatment effect.